EP0890968A2 - Disjoncteur unipolaire - Google Patents

Disjoncteur unipolaire Download PDF

Info

Publication number
EP0890968A2
EP0890968A2 EP98890179A EP98890179A EP0890968A2 EP 0890968 A2 EP0890968 A2 EP 0890968A2 EP 98890179 A EP98890179 A EP 98890179A EP 98890179 A EP98890179 A EP 98890179A EP 0890968 A2 EP0890968 A2 EP 0890968A2
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
intermediate guide
guide piece
overload
release element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP98890179A
Other languages
German (de)
English (en)
Other versions
EP0890968A3 (fr
EP0890968B1 (fr
Inventor
Tibor Dr. Dipl.-Ing Polgar
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Felten and Guilleaume Austria AG
Original Assignee
Felten and Guilleaume Austria AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Felten and Guilleaume Austria AG filed Critical Felten and Guilleaume Austria AG
Priority to AT98890179T priority Critical patent/ATE281695T1/de
Publication of EP0890968A2 publication Critical patent/EP0890968A2/fr
Publication of EP0890968A3 publication Critical patent/EP0890968A3/fr
Application granted granted Critical
Publication of EP0890968B1 publication Critical patent/EP0890968B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
    • H01H71/7427—Adjusting only the electrothermal mechanism
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/1009—Interconnected mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
    • H01H71/7427—Adjusting only the electrothermal mechanism
    • H01H71/7445—Poly-phase adjustment

Definitions

  • the invention relates to a single-phase circuit breaker with a switching mechanism, which can be actuated at least by an overload release element, with the circuit breaker at least one further, preferably two such single-phase circuit breakers, such can be coupled that in the event of an overload on a circuit breaker due to the coupling a All-pole separation takes place with regard to all circuit breakers, and where appropriate an actuator and a current scale associated therewith Current range setting device is provided.
  • Such a circuit breaker was already known from EP-B1-338 250 .
  • a multi-phase circuit breaker is described here, the individual pole sections of which are formed by individual circuit breakers. Each pole section therefore has its own switch contacts, its own switch locks that actuate these switch contacts and its own overload and short-circuit release elements that actuate the switch locks.
  • the pole sections are coupled to one another in such a way that all other pole sections are also triggered when a single switch lock is triggered.
  • the overload release element is formed by a bimetallic strip, the first end of which in Circuit breaker fixed and its second end by bending the bimetal due to heating by the current to be monitored move to the switch lock and this can trigger when touched.
  • EP-B1-338 250 a single intermediate guide piece common to all pole sections is provided.
  • the individual adjusting elements are suspended on this intermediate guide piece in the working direction of the bimetal strip so that they can move relative to one another by means of joints.
  • the intermediate guide piece itself is transverse to the working direction of the individual housings Bimetallic strip slidably mounted, consequently also the wedge surfaces approximately transverse to Bimetal working direction.
  • the movement of the intermediate guide piece takes place via a central actuator, which as a cylindrical, in a common covering the intermediate guide piece Housing part is formed pivotally mounted rotary knob about its longitudinal axis. This has an eccentric on its end facing the intermediate guide piece arranged pin, which in a slot arranged in the intermediate guide intervenes.
  • a central actuator which as a cylindrical, in a common covering the intermediate guide piece Housing part is formed pivotally mounted rotary knob about its longitudinal axis.
  • This has an eccentric on its end facing the intermediate guide piece arranged pin, which in a slot arranged in the intermediate guide intervenes.
  • the number of poles of the circuit breaker is due to the design of the common Intermediate guide piece limited. Each desired number of poles must therefore have its own Intermediate guide pieces may be provided.
  • the actuation of the key switch by the bimetal strip itself brings the following Difficulties with it:
  • the bimetal warms up to its normal function 250 ° C.
  • the one touched directly by the bimetal, often complex and relative in shape voluminous switch lock part must be made of temperature-resistant and therefore more expensive Plastic or metal can be made.
  • the direct actuation of the Locked a low vibration and shock resistance because of the bimetal vibrations can be transferred directly to the castle.
  • Circuit breakers should also have a high shock and vibration resistance as well relatively uncritical with regard to inaccuracies in the positioning of the connection points of the actuator and intermediate guide piece.
  • a wedge-shaped adjusting member between the overload release element and a bracket acting on the switching mechanism is that the wedge-shaped adjusting member by means of an elastically flexible spring with a Intermediate guide piece is firmly connected and that the intermediate guide piece in Working direction of the overload release element slidable in the housing of the circuit breaker is stored.
  • Each single-phase circuit breaker according to the invention thus has its own Intermediate guide piece with adjuster attached to it. He can therefore be independent operated by other components, i.e. by itself to secure an individual current-carrying line used or in any number with similar other single-phase circuit breakers coupled and to protect a multi-phase Conductor system can be used.
  • Intermediate guide piece facing a further circuit breaker connected End faces a recess and / or a congruent to this recess molding has which shape extends through the housing of the circuit breaker.
  • the single-phase circuit breaker according to the invention is, as can best be seen from FIG.la similar to a conventional circuit breaker.
  • It essentially comprises two screw terminals 14, 15 for connecting the monitoring line, an overload release element 1 and a Short-circuit release device 16, next to it a switching mechanism 2, which the movable contact 17th can move from the closed shown in Fig. La to an open position.
  • the current to be monitored flows through this circuit breaker starting from the first one Screw terminal 14 first the overload release element 1, passes over a movable Conductor rope 19 and the contact carrier 20 to the movable contact 17, then over the fixed contact 18 to the short-circuit release device 16 and finally to the second Terminal 15.
  • the switching mechanism 2 is both from the short-circuit release device 16 and from Overload release element 1 can be actuated in the ways described below.
  • the short-circuit release device 16 is in a manner known per se by means of a magnetic coil formed with a movable armature, which armature with correspondingly high short-circuit currents strikes on the contact carrier 20 of the switching mechanism 2.
  • the overload release element 1 consists of a bimetallic strip that is to be monitored Electricity is heated.
  • the first end 21 of the bimetallic strip is in the housing of the Circuit breaker set, the second end 22 is kept freely movable.
  • the through the Warming of the bimetal causes a bending of the same Movement of the second end 22 in the direction of the arrow 23.
  • the contact carrier 20 is by means of a spring 24 in the open position of the biased contact 17.
  • the minor deflections of the Contact carrier 20 by the armature of the short-circuit release device 16 or by the Overload release element 1 via the bracket 3 are complete by means of this spring 24 Swiveling the contact carrier 20 into the open position of the movable contact 17 reinforced.
  • the housing of the circuit breaker according to the invention is in a manner known per se in two parts, consisting of lower shell 26 and upper shell 27, (see FIG. 1b).
  • the peculiarity of the circuit breaker according to the invention lies in a device for Adjustment of the response sensitivity of the overload release element 1. So in one Nominal current adjustment device, which is shown in detail in Fig. 1c.
  • This adjustment device The most important component of this adjustment device is the wedge-shaped adjustment member 4, which between the overload release element 1 - strictly speaking, between its free End 22- and the bracket 3 acting on the switching mechanism 2 is arranged. Furthermore is a Intermediate guide piece 6 is provided, which in the housing of the circuit breaker in the direction of Arrow 28, ie in the working direction of the overload release element 1 -symbolisicrt by the Arrow 23- is slidably mounted.
  • the wedge-shaped adjusting member 4 is by means of an elastically flexible spring 13 which in one Guide 29 held is firmly connected to the intermediate guide piece 6.
  • the spring 13 is in the embodiment of the invention shown in the drawings, both with the Adjustment member 4 and riveted to the intermediate guide piece 6, but not is to be understood restrictively, also other types of connection such as gluing, welding, etc. could be used.
  • the free end 22 of the overload release element 1 needs around in this arrangement Touch bracket 3 and thus trigger the switching mechanism 2, not the cover the entire distance between its rest position and this bracket 3. This Distance is about the width of the straight lying between free end 22 and bracket 3 Adjusting member 4 reduced. In order not to hinder the free end 22 in its movement, the adjusting member 4 must be pivoted as easily as possible, which is due to the highest possible Elasticity of the spring 13 is reached.
  • the spring 13 can be used as a thin band or thin rope made of metal or plastic.
  • a Actuator 5 provided (see Fig. 2). This is a cylindrical knob trained and pivotable about its longitudinal axis in the housing of the circuit breaker stored.
  • the actuating member has on its end face facing the intermediate guide piece 6 5 an eccentrically arranged pin 7, which in a in the intermediate guide 6th arranged slot 31 engages.
  • circuit breaker described so far is single-phase, that is, only one for monitoring single current-carrying line.
  • Miniature circuit breakers but built up in multiple phases, so that they have several at the same time can monitor live lines.
  • circuit breakers In the common three-phase system mostly two-, three- or four-phase circuit breakers (for monitoring one from L and N, L1, L2 and L3 or L1, L2, L3 and N existing system) used.
  • Circuit breakers according to the invention are designed so that several such single-phase Circuit breakers can be coupled to one another in such a way that a circuit breaker is overloaded according to the coupling there is an all-pole disconnection with regard to all circuit breakers.
  • each circuit breaker according to the invention is on its own fully functional, so that by simply layering individual switches side by side multi-phase circuit breaker can be formed.
  • the coupling of the individual switching mechanisms 2 can thereby be brought about be that the lever 25 provided for manual engagement of each Circuit breakers are mechanically connected to each other.
  • the rear deraille 2 each with one (in the drawings for clarity not shown) to provide fingers of the housing of his as well as the housing of the protrudes adjacent circuit breaker laterally, in the switching mechanism 2 of the neighboring Protective switch engages and this also actuates when his switching mechanism 2 responds.
  • the mentioned simple juxtaposition of single-phase circuit breakers 1 and 2 would have the consequence that each pole section of the resulting multi-phase circuit breaker its own, separate from all other pole sections Nominal current setting device. This is certainly not an option Design of a multi-phase circuit breaker, but it would be impractical in practice, because the user would have to adjust each pole distance separately.
  • the intermediate guide pieces 6 are therefore provided with one another to connect the coupled circuit breaker to one another.
  • the housing of the switches concerned in the area of Intermediate guide pieces 6 accessible, e.g. be provided with openings 10.
  • connection can be freely selected: two neighboring ones Intermediate guide pieces 6 can, for example, by gluing, welding, Riveting or by positively engaging in both intermediate guide pieces 6 additional components, such as pins, can be attached to one another.
  • FIGS. 3, 4 A particularly preferred type of connection is shown in FIGS. 3, 4 using a three-phase connection Circuit breaker shown and will be explained in more detail below.
  • the upper shell 27 of the circuit breaker L1 also has one Opening 10 on which when the two circuit breakers L1, L2 are joined together over the Opening 10 of the circuit breaker L2 comes to rest.
  • the formation 12 can thus also protrude through the housing of the circuit breaker L1 and in its interior stretch in.
  • the intermediate guide piece 8 of the circuit breaker L1 has one for molding 12 Concrete recess 11, in which the projection 12 engages, whereby the Intermediate guide pieces 6, 8 are positively connected to one another.
  • the side surfaces 34 could, for example, unite with one another form an acute angle, the formation 12 and recess 11 thus seen in the plan be triangular.
  • the formation 12 itself widening with increasing distance from the end face of the intermediate guide piece 6 and accordingly to form the recess 11 with increasing depth (see Fig.4b). With this design, however, it is necessary to Attach intermediate guide pieces 6, 8, 9 to each other in a separate operation.

Landscapes

  • Breakers (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
EP98890179A 1997-07-10 1998-06-24 Disjoncteur unipolaire Expired - Lifetime EP0890968B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT98890179T ATE281695T1 (de) 1997-07-10 1998-06-24 Einphasiger schutzschalter

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT0119097A AT405111B (de) 1997-07-10 1997-07-10 Einphasiger schutzschalter
AT119097 1997-07-10
AT1190/97 1997-07-10

Publications (3)

Publication Number Publication Date
EP0890968A2 true EP0890968A2 (fr) 1999-01-13
EP0890968A3 EP0890968A3 (fr) 1999-11-17
EP0890968B1 EP0890968B1 (fr) 2004-11-03

Family

ID=3508563

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98890179A Expired - Lifetime EP0890968B1 (fr) 1997-07-10 1998-06-24 Disjoncteur unipolaire

Country Status (13)

Country Link
EP (1) EP0890968B1 (fr)
CN (1) CN1110831C (fr)
AR (1) AR010930A1 (fr)
AT (2) AT405111B (fr)
AU (1) AU731133B2 (fr)
CZ (1) CZ295513B6 (fr)
DE (1) DE59812199D1 (fr)
ES (1) ES2231955T3 (fr)
HU (1) HU222298B1 (fr)
MY (1) MY116194A (fr)
PL (1) PL187471B1 (fr)
SK (1) SK284936B6 (fr)
TN (1) TNSN98131A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1372178A1 (fr) * 2002-06-13 2003-12-17 Eaton Corporation Disjoncteur avec une unité de déclenchement thermique ajustable
FR2894382A1 (fr) * 2005-12-06 2007-06-08 Schneider Electric Ind Sas Declencheur thermique reglable pour dispositif de coupure

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4924374B2 (ja) * 2007-11-15 2012-04-25 富士電機機器制御株式会社 回路遮断器

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1466258A (en) * 1973-10-04 1977-03-02 Dorman Smith Switchgear Ltd Electrical circuit breakers
DE3812934A1 (de) * 1988-04-19 1989-11-02 Sursum Elektrizitaetsgesellsch Mehrphasiger schutzschalter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1372178A1 (fr) * 2002-06-13 2003-12-17 Eaton Corporation Disjoncteur avec une unité de déclenchement thermique ajustable
FR2894382A1 (fr) * 2005-12-06 2007-06-08 Schneider Electric Ind Sas Declencheur thermique reglable pour dispositif de coupure

Also Published As

Publication number Publication date
CZ207598A3 (cs) 1999-06-16
ATA119097A (de) 1998-09-15
ES2231955T3 (es) 2005-05-16
HUP9801453A3 (en) 2000-05-29
HUP9801453A2 (hu) 1999-04-28
AR010930A1 (es) 2000-07-12
PL187471B1 (pl) 2004-07-30
TNSN98131A1 (fr) 2000-12-29
CN1110831C (zh) 2003-06-04
EP0890968A3 (fr) 1999-11-17
SK284936B6 (sk) 2006-02-02
EP0890968B1 (fr) 2004-11-03
AU731133B2 (en) 2001-03-22
CN1205536A (zh) 1999-01-20
AU7396598A (en) 1999-01-21
AT405111B (de) 1999-05-25
MY116194A (en) 2003-11-28
HU222298B1 (hu) 2003-06-28
HK1017944A1 (en) 1999-12-03
PL327001A1 (en) 1999-01-18
HU9801453D0 (en) 1998-08-28
SK90998A3 (en) 1999-02-11
DE59812199D1 (de) 2004-12-09
ATE281695T1 (de) 2004-11-15
CZ295513B6 (cs) 2005-08-17

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